/*
*
* * Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
* *
* * For more information: http://www.orientechnologies.com
*
*/
package com.orientechnologies.orient.core.sql.functions.stat;
/**
* Computes the median for a field. Nulls are ignored in the calculation.
*
* Extends and forces the {@link OSQLFunctionPercentile} with the 50th percentile.
*
* @author Fabrizio Fortino
*/
public class OSQLFunctionMedian extends OSQLFunctionPercentile {
public static final String NAME = "median";
public OSQLFunctionMedian() {
super(NAME, 1, 1);
this.quantiles.add(.5);
}
@Override
public String getSyntax() {
return NAME + "(<field>)";
}
}